Yo, I feel you hard on this one. TikTok on BlueStacks (and basically every other emulator) is a total pain in the ass with the lag and constant crashes. Tried everything myself too and it still acts up sometimes.
First off, what’s your PC looking like? How much RAM, what CPU and GPU? If it’s on the weaker side TikTok just eats resources like crazy with all the videos.
Stuff that actually helped a lot of people:
Open the multi-instance manager and create a completely new Pie 64-bit instance. Install TikTok fresh from the Play Store on that one. BlueStacks themselves recommend Pie for TikTok and it fixed the crashing for a bunch of folks when the normal instance was dying.
Give that instance at least 4-6 GB RAM and a few CPU cores, crank performance to high.
In the graphics settings try switching between OpenGL and DirectX (and the interface renderer too) until it stops shitting itself.
Clear TikTok’s cache and data completely (settings > apps > TikTok > storage), then force stop it and reopen. Sometimes reinstalling the app after that helps.
Also make sure virtualization is actually enabled (check Task Manager > Performance > CPU, it should say “Virtualization: Enabled”). If it’s off you gotta turn it on in the BIOS.
Update your graphics drivers from the official NVIDIA/AMD/Intel site, that alone fixed lag for some people.
If regular TikTok still crashes hard, try TikTok Lite instead — it’s way lighter and runs smoother on emulators.
Worst case just use the web version at tiktok.com, fewer features but at least it doesn’t crash every 30 seconds.
Hit me with your specs if none of that works and we’ll dig deeper. Hope something here finally kills the problem for you.