I recorded a video of the issue. This shows how its intermittent, but very noticeable and drastically reduces the quality of gameplay.
https://www.youtube.com/watch?v=KLZ0vRa_pps&feature=youtu.be
When hosting the same world locally on my PC instead of Realms, the issue is much less severe. I have gigabit internet and my PC is using an nVidia 1080Ti to run the game, so this makes me think that not enough resources are being allocated to running the Realm when hosted by Microsoft.
Please fix this!!!
I can confirm this bug still exists on Minecraft v1.12.0 on Windows 10. When more than one person joins the realm, the tick rate of the server drastically slows to a point where I once waited more than a minute to absorb an experience orb. Block updates take 2 seconds or more depending on the lag, which tends to increase with more people and decrease with less.
The game is UNPLAYABLE in this state. I'm paying for the capability of playing with 10 friends, and the Realms server struggles to handle 2 or 3 players.
This issue is not resolved after closing/reopening the realm. We've also troubleshooted our local networks and have ruled them out as the cause of the issue. Also, geographically speaking, we're all within a 500 miles radius on the east coast of the US, so not something that the Realms server shouldn't be able to handle.
I can confirm this issue exists.
The more people on the realm, the worse it is. It honestly seems like not enough resources are being dedicated to Realms.
When hosting the same world locally on my PC with others joining, we experience normal network latency but its nothing compared to how bad the world runs when hosted by Microsoft/Mojang
I've also reported this issue in this case: https://bugs.mojang.com/projects/MCPE/issues/MCPE-47972?filter=allopenissues
I recorded a video showing how slow the NPCs become and how slowly and inconsistently doors open: https://www.youtube.com/watch?v=KLZ0vRa_pps&feature=youtu.be
Sometimes the issue gets so bad that the server desyncs and issues like this happen: https://www.youtube.com/watch?v=f5-XTEcChIM&feature=youtu.be
PLEASE FIX THIS ISSUE!! UPGRADE YOUR SERVER RESOURCES!!!
I guarantee I will NOT continue paying for a Realm if this issue continues.