Choppy Playback when I put colour and Luts

I've got the same problem with you. Did you find any solution? 

its 14.3.2 go back to 14.2 and away is your problem.

I have a 2020 12core 3.3 macpro + vega2 32GB gfx and still got that problem AFTER upgrading, everything in the same timeline ran perfect before upgrade.

Its ridiculous, and crazy and really annoying that upgrades make you go maddeingly slower and underperforming.

ADOBE! Get your act together or I'm def away to Resolve!!!

Those are rather large LUTs ... what made them, what sort of thing is included in them? How many 'points'?

Neil

I agree. I have same problems with LUTs. I did several tests and this is what I get. If I use Lumetri without any LUTs then it works fast and good. If I apply small size LUT (for example less then 2 Mb) then again playback works good. If I apply big LUT (like 4-5 Mb) then playback gets very choppy (but regular), like it's 10fps instead of 30fps.

You could say: just don't use big LUTs - this is a solution. But in Premiere 2019 (and older) everything works great! This is old LUTs that I used for a long time without problems. But in Premiere 2020 I see this choppy playback.

Color correction especially including LUTs and manual corrections is a rather intensive "effect". So unless you've got upper gear, that can start to slog a computer down. Your rig has a fairly slow 6-core CPU, which won't work perhaps fast enough to even push the GPU. The work always starts in the CPU, and then it sends the data that is GPU-work to the GPU as it gets to it.

Neil