Low FPS when blurred menu background is visible

We do not have enough information to find the cause of this issue.

Please tell us what your system details are: i.e. graphics card, CPU, etc.

You can give us all the relevant information by forcing a crash by pressing F3 + C for 10 seconds while in-game and attaching the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|https://minecrafthopper.net/help/finding-minecraft-data-folder/]) here.

If this issue not only happens in the main menu but also when in the blurred menu ingame, please do the following:

While the lag occurs, please press F3 + L once, then go into some menu with a blurred background, and wait a short moment until profiling has finished.
Afterwards, please attach the generated .zip file containing the profiling results here. The file path is shown in chat; the file can be found in [minecraft/debug/profiling/<DATE>.zip|https://minecrafthopper.net/help/finding-minecraft-data-folder/].

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One more thing it lags with programmer art also were it should not lag.

Probably caused by a shader present when these screens are displayed, setting the blur to 0 won't make any difference. Not sure if they're willing to do something about it since it seems to only be noticeable on low end machines, but it sure is a regression from previous versions.

By entering the new blurred menu, my GPU's 3D usage increased by around 6%. I have an AMD RX 7600.

Definitely also appears to be happening on my end.

On an integrated AMD Renoir on Ubuntu 20.04 with 1920x1080 resolution, there is no noticeable lag. Enabling 150% fractional scaling (tells the application to render at 3x resolution, then downscales by 2x) creates excessive lag. Reducing the size of the game window helps.

I have uploaded a resource pack that replaces the blur shader with a no-op as a temporary fix. Note that the shader still runs even when blur is set to 0%, so some users may still experience a little lag.

Tis_awesomeness Thanks man that helps.

The previous NoBlur resource pack caused other shader effects that use blur (such as the glowing effect) to not work. This updated version only disables the post-processing blur.