Stutter with Mouse Look on MacOS

[Andrew67100]

Alright, so I posted about this a few days ago and I'm now 100% sure this is a bug with GZDoom and is no fault of the hardware I'm using. No matter if I use the ARM or Intel version of the game, there is a noticeable stutter that happens only when moving the mouse. This stutter does not occur if I just move around the map using WASD alone. I've managed to capture it on video here with the first clip being my PC running the game for a baseline:https://imgur.com/a/H3YRack

I even thought that maybe turning on VRR would solve the issue. Nope, stutter still present. And other FPS games like vkQuake run perfectly smooth on my Mac, so it's not an issue with my mouse. I can understand why this bug has gone under the radar for so long because the stutter really isn't noticeable at 60 FPS (I'm running the game at 100), and is so slight that if you're not very sensitive to frame-time inconsistencies, you likely won't even notice it. But, hopefully the slow motion video helps show what has turned into a major distraction for me.

A lack of processing power is also not the issue as my Mac runs DOOM II at around 1,000 FPS, and the frame rate counter does not reflect these stutters at all; it always shows a perfect 100 FPS.

Squishing this bug would be fantastic since I have a huge WAD library I love playing, and would love to play some of the more demanding WADs on my Mac since it's my most capable machine. I'm happy to gather any other info and do any other testing to help. This specific machine is an M1 Max Mac Studio with 32 GB of DDR5 memory, a 10 core CPU, 32 core GPU. I'm not sure if the additional CPU or GPU cores over the normal M1 has caused some issues as I totally understand that most devs aren't even considering a Mac Studio desktop as a target machine.

Thanks so much.

[dpJudas]

There is a good chance this would be fixed by switching to the raw mouse input from the game controller API in macOS. Unfortunately my mac mini from late 2014 refuses to upgrade itself to a version of macOS with this API, so I can't even test this theory. Perhaps some developer with newer mac hardware can try add the support.

[Andrew67100]

There is a good chance this would be fixed by switching to the raw mouse input from the game controller API in macOS. Unfortunately my mac mini from late 2014 refuses to upgrade itself to a version of macOS with this API, so I can't even test this theory. Perhaps some developer with newer mac hardware can try add the support.

This does sound like the solution. A toggle in GZDoom to enable raw input would be absolutely beautiful.

[vidumec]

I also get heavy stutter on MacOS when holding down fire and moving the mouse around, even when running just doom2.wad without any mods

but if i enable Rendering Interpolation, that stutter is reduced heavily. I just prefer playing at original 35fps

***

Nevermind, the fire stutter was being caused by Rectangle app, once i closed it it went away, and when i reopen it it comes back.