final cut pro 10.5

I bought in April an MBA 2020 1,2 GHz Intel Core i7 4-core, 16 Go 3733 MHz LPDDR4X. Using it with Logic PRO (no issues) and with Final Cut Pro (really slow when trying to make 4K videos but ok otherwise - not great, but ok). That was an upgrade from a 2013 MBA, 1.7GHz Intel Dual-Core Core i7...

So, I'm an editor for some buddies of mine who vlog. I noticed that our 4k videos look kinda grainy after exporting, but I save them in the highest quality possible. For instance, there's a video I helped film on vacation with them and I noticed that one of the first scenes is crystal clear...