Go to Settings > Graphics Mode and switch it to Manual . Drop the Graphics Quality slider to 1 or 2. This is the single most effective way to gain FPS instantly.
Your PC often tries to save power instead of giving you maximum performance. How To Boost FPS, FIX Lag And FPS Drops In Robl...
Over time, Roblox saves temporary files that can become corrupted and cause stutters. Press Windows Key + R . Type %temp%\Roblox and hit Enter. Go to Settings > Graphics Mode and switch it to Manual