Off-Topic Discussions

Ok guys, I'm a bit stumped.

I play Modded Minecraft (Oceanblock Mod Pack) and I have it on my laptop, Old Main PC and the newer modern PC I just finished building.

The game runs perfectly on all three except for one thing: even though I can export and play my saved world from my laptop and Old Main and vice versa, I can't get the world to load on the new system. Game freezes and lags out the PC to the point where I have to use Task Manager to shut it down. If I create a world on the new PC, then it loads ok....but the same issue happens when the world is transferred to the Old Main and Laptop and the game crashes. Task Manager says that Java is "Suspended" after a minute or so of play and won't unsuspended it.

I don't know why this is happening and what's causing it.

Here are the specs if you guys can help out:
Old PC:
Motherboard: ASUS Z97-A
Processor: Intel i7 4790
GPU: ASUS RTX 2060

Laptop:
Dell Alienware M17:
Processor: Intel i7 8750H
GPU: NVIDIA GeForce RTX 2070 with MAX-Q Design

New PC:
Motherboard: ASUS AM4 TUF GAMING X570-PLUS (WIFI)
Processor: AMD RYZEN 9 5950X
GPU: ASUS TUF GAMING RTX 3090

I have way than enough Memory on all machines.
FYI: I do use Optifine and with/without it installed, it still does the same thing with every Modpack I've tested from Feed The Beast. I just totally stumped.

And all machines have the same version of Java and running Windows 10 PRO.
If anyone can help me out with this, it would be greatly appreciated.

Full specs of new system:
Case: Cougar Panzer EVO RGB.
Motherboard: ASUS TUF GAMING X570-Plus (Wi-Fi).
Processor: AMD RYZEN 9 5950X ZEN 3 3.4GHz.
OS: Windows 10 PRO Version: 21H1 Build: 19043.1466.
Cooler: Cooler Master MasterLiquid ML360R 3 Fan RGB.
PSU: Rosewell Lightning-1300 1300w.
Memory: CORSAIR Vengeance Pro RGB 128GB 3200MHz (OC) 4x32.
Graphics Card: ASUS TUF GAMING RTX 3090 (OC Edition).
SSD Drives: 2 NVMe Seagate Firecuda 2TB M2 2280 and 1 Western Digital Blue 4TB.
NVMe Heatsink: EZDIY-FAB 5V ARGB M.2 Heatsink SSD Cooler with 20mm Cooling Fan.
Remote: SilverStone Technology 2.4G Wireless Remote Computer Power/Reset Switch, USB 2.0 9-pin Interface ES02-USB.
Cables: various cables from CableMod.com and splitters.

maybe try hosting it on a raspberry pi? there might be something in the world save that the new PC doesn't like and vice versa