Been having this issue persistently on both my Macs, for maybe half a year now. I press a key on my keyboard, and it’ll take a significant amount of time before it’s reflected on my computer. If I press a lot of keys at once, it becomes far worse.
The size of the script doesn’t matter, it can literally be empty, scrolling is hugely laggy too. Having said that, the rest of studio works just fine.
My Macs are both fast and modern, both running macOS Sierra, 10.12.1
In terms of graphics card, on my MacBook Pro, I have a AMD Radeon Pro 450 2048MB as well as a Intel HD Graphics 530 1536MB. On my iMac I’m using an AMD Radeon R9 M395X 4096MB.
Both have plenty of free RAM and i7s. My friend GGGGG14 who recently brought a new Mac is having the same issue.
Edit: I have tried reinstalling multiple times and deleted the NP Plugin thing, and uninstalled all Roblox plugins.