My problem are 3D Items like Stone , Dirt , Glowestone , etc. (anything that sticks out of Item Frame) that are in Item Frame . Any time I look at direction of Item Frames that have those items in them, my FPS drops drasticaly .
Problem started since 1.7.4 update , any update before that was fine ( I could have 50 of Item Frames filled with Stone and no FPS drop will be visible ) .
I did try new Snapshots like 14w08a and problem is still same , anything that sticks out of Item Frame causes me FPS drop .
This is happening as long I am facing in direction of those Item Frames that are loaded in Chunks I'm facing .
If I have anything else in Item Frame that is "flat" while in Item Frame , like Mob heads or books does not affect FPS drop in any of updates . Different thing are Enchanted stuff , but that is easy to fix while using Normal Graphics instead of Fancy in game .
Here are some pictures of my problem ;
As you can see , there is no difference looking at Item Frames with Stone in them while in 1.7.2 , but there is big FPS drop while in 1.7.4 and latest snapshot .
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My problem is more specific since only certain objects in Item Frames causes me to lag . In my case it's cube-like objects . As I show in screenshots in 1.7.2 I don't have any FPS drop while looking at Frames that have Stone in them , but looking at same thing in 1.7.4 and latest snapshot , my FPS drops by half and yet stays pretty much same while not having cube-like objects in them .
I can have 50 of Item Frames filled with "flat" items in them and will have really small FPS drop in 1.7.4 and latest snapshot , but having them filled up with "cube" blocks , my FPS will drop to 1 .
At same time, playing in 1.7.2 and earlyer versions and having 50 Item Frames filled up with all kinds of items , my FPS won't drop that low .
If it's already resolved for next snapshot , then awesome 🙂

Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]
) here.
Here is crash report from [b]1.7.2/b (no fps drop one)
Minecraft Crash Report ----
// Uh... Did I do that?
Time: 27.02.14. 14:17
Description: Manually triggered debug crash
java.lang.Throwable
at azd.o(SourceFile:1383)
at azd.ad(SourceFile:753)
at azd.e(SourceFile:704)
at net.minecraft.client.main.Main.main(SourceFile:103)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
– Head –
Stacktrace:
at biz.a(SourceFile:284)
– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bje['Mefiles'/14, l='MpServer', x=38,85, y=64,98, z=-1520,65]]
Chunk stats: MultiplayerChunkCache: 299, 299
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (14,4,-1449), Chunk: (at 14,0,7 in 0,-91; contains blocks 0,0,-1456 to 15,255,-1441), Region: (0,-3; contains chunks 0,-96 to 31,-65, blocks 0,0,-1536 to 511,255,-1025)
Level time: 436032 game time, 7345 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 10 total; [rf['entity.ItemFrame.name'/0, l='MpServer', x=36,06, y=63,50, z=-1520,50], rf['entity.ItemFrame.name'/1, l='MpServer', x=36,06, y=63,50, z=-1521,50], rf['entity.ItemFrame.name'/2, l='MpServer', x=36,06, y=64,50, z=-1521,50], rf['entity.ItemFrame.name'/3, l='MpServer', x=36,06, y=65,50, z=-1521,50], rf['entity.ItemFrame.name'/4, l='MpServer', x=36,06, y=65,50, z=-1520,50], rf['entity.ItemFrame.name'/5, l='MpServer', x=36,06, y=64,50, z=-1520,50], rf['entity.ItemFrame.name'/6, l='MpServer', x=36,06, y=63,50, z=-1519,50], rf['entity.ItemFrame.name'/7, l='MpServer', x=36,06, y=65,50, z=-1519,50], rf['entity.ItemFrame.name'/8, l='MpServer', x=36,06, y=64,50, z=-1519,50], bje['Mefiles'/14, l='MpServer', x=38,85, y=64,98, z=-1520,65]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at biz.a(SourceFile:284)
at azd.b(SourceFile:1951)
at azd.e(SourceFile:713)
at net.minecraft.client.main.Main.main(SourceFile:103)
– System Details –
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 61013424 bytes (58 MB) / 182206464 bytes (173 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 153 (8568 bytes; 0 MB) allocated, 11 (616 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.2
LWJGL: 2.9.0
OpenGL: Radeon X300/X550/X1050 Series GL version 2.1.8545 Release, ATI Technologies Inc.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 159 (8904 bytes; 0 MB) allocated, 46 (2576 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
And here is from [b]1.7.4/b (if needed , I can do this with 1.7.5 and latest snapshots , but it's same thing)
Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.
Time: 27.02.14. 14:24
Description: Manually triggered debug crash
java.lang.Throwable
at azi.p(SourceFile:1385)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
– Head –
Stacktrace:
at bka.a(SourceFile:289)
– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bkf['Mefiles'/13, l='MpServer', x=38,85, y=64,98, z=-1520,65]]
Chunk stats: MultiplayerChunkCache: 210, 210
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (14,4,-1449), Chunk: (at 14,0,7 in 0,-91; contains blocks 0,0,-1456 to 15,255,-1441), Region: (0,-3; contains chunks 0,-96 to 31,-65, blocks 0,0,-1536 to 511,255,-1025)
Level time: 436852 game time, 8165 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 10 total; [rk['entity.ItemFrame.name'/0, l='MpServer', x=36,06, y=63,50, z=-1520,50], rk['entity.ItemFrame.name'/1, l='MpServer', x=36,06, y=63,50, z=-1521,50], bkf['Mefiles'/13, l='MpServer', x=38,85, y=64,98, z=-1520,65], rk['entity.ItemFrame.name'/2, l='MpServer', x=36,06, y=64,50, z=-1521,50], rk['entity.ItemFrame.name'/3, l='MpServer', x=36,06, y=65,50, z=-1521,50], rk['entity.ItemFrame.name'/4, l='MpServer', x=36,06, y=65,50, z=-1520,50], rk['entity.ItemFrame.name'/5, l='MpServer', x=36,06, y=64,50, z=-1520,50], rk['entity.ItemFrame.name'/6, l='MpServer', x=36,06, y=63,50, z=-1519,50], rk['entity.ItemFrame.name'/7, l='MpServer', x=36,06, y=65,50, z=-1519,50], rk['entity.ItemFrame.name'/8, l='MpServer', x=36,06, y=64,50, z=-1519,50]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bka.a(SourceFile:289)
at azi.b(SourceFile:1952)
at azi.f(SourceFile:720)
at net.minecraft.client.main.Main.main(SourceFile:152)
– System Details –
Details:
Minecraft Version: 1.7.4
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 41608752 bytes (39 MB) / 180908032 bytes (172 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 1212 (67872 bytes; 0 MB) allocated, 11 (616 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.4
LWJGL: 2.9.1
OpenGL: Radeon X300/X550/X1050 Series GL version 2.1.8545 Release, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 207 (11592 bytes; 0 MB) allocated, 46 (2576 bytes; 0 MB) used
Anisotropic Filtering: Off (1)