I once compiled TPT on raspberry pi 3 b+. It is quite lag for common saves tho, like around 20 FPS.
I haven't bought model 4 so I can only make some prediction here.

Here we look at the most significant difference.

RPi 3b+ has

• quad-core 1.4GHz CPU (affects simulation speed directly)
• 1 GB RAM (size only matters if TPT is using all the memory, but it is not)
• GPU Broadcom Videocore-IV (affects screen rendering)

RPi 4 has

• quad-core 1.5GHz CPU
• 4 GB RAM maximum, and faster
• GPU good enough to handle one screen output without performance loss

There is slight upgrade from all aspect if you look at the numbers.
Usually such all-rounded upgrades would solve a few system bottlenecks,
the final effect depends a lot, you need to try yourself.
You can expect up to around 30 FPS, I would say still quite lag for human users.

The compilation guide is not updated as often as the repository,
there might be problems but it should mostly works.

@player4444 (View Post)

It can be compiled on the RPi4 (use the linux compilation guide) with this flag when building: --no-sse.

Like so:

make -j4 --no-sse --release

(The flag --release is inperitive for a higher framerate)

expect between 20 FPS for large saves and 45 FPS for smaller saves

You CAN change the resilution of TPT for higher performance (45-60 FPS), but don't expect any saves to load.