https://bugs.winehq.org/show_bug.cgi?id=57247
Bug ID: 57247 Summary: FL Studio is extremely sluggish Product: Wine Version: 9.18 Hardware: x86-64 OS: Linux Status: NEW Severity: normal Priority: P2 Component: dwmapi Assignee: wine-bugs@winehq.org Reporter: dark.shadow4@web.de Distribution: ---
Download: https://install.image-line.com/flstudio/flstudio_win64_24.1.1.4285.exe Archived at https://web.archive.org/web/20240821135437/https://install.image-line.com/fl...
During installation you might encounter bug 57208 (doesn't happen for me though). After starting the program, open the "Keep it Simple" demo project.
The program uses a full core of CPU constantly. Trying to open the "FILE" menu and moving the mouse over the entries, it hangs often for seconds at a time. Same happens for most other actions.
As reported in bug 57240, the program seems to run smoothly for other users though...
A performance measurement shows a thread constantly calling DwmFlush. I suspect it might try to use DwmFlush as vsync-like operation. DwmFlush is currently a stub, replacing it with a "Sleep(16)" makes the program work smoothly.