Bug 462608

SUMMARY
I just updated to latest version from my fav 5.24 and i'm experiencing some weird lag. Its not really noticable on my i7 11g machine, but its really annoying on i5 laptop


STEPS TO REPRODUCE
0. (optional) set your cpu freq to minimum so you can see this bug better
`echo 0 > /sys/devices/system/cpu/intel_pstate/max_perf_pct`
1. Go to settings > workspace behaviour > desktop effects and enable "desktop grid"
2. press the hotkey that activates that effect

OBSERVED RESULT
the actual desktop grid only appears after like 1-2 seconds after you pressed the key

EXPECTED RESULT
grid appears instantly just like it was in 5.24

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Garuda
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.100.0
Qt Version: 5.15.7
tested all the options of desktop grid, present windows and kwin, nothing seems to help but downgrading

ADDITIONAL INFORMATION
everything else works just fine though, the grid just loads for too long.
Its not a critical bug, you may say that its fine, buy more ram, etc
but that would be very nice if you can fix it so i can continue using plasma on laptop, even when need to save battery and reduce cpu power ^-^