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Just to know:
Both zram and swap file can provide additional virtual memory to Puppy Linux, but the better option for you may depend on your specific needs and hardware configuration so this is the first you need to know.
Zram compresses and stores data in RAM, allowing for faster read and write operations.
It can be a good option if you have limited RAM and need to optimize your system's performance.
However, if you have sufficient RAM, zram may not provide significant performance gains and s much better use the physical ram, not this "virtual one".
On the other hand, a swap file is a dedicated space on your hard drive that is reserved for virtual memory.
The same as zram, It can be useful if you have limited RAM and need to extend your system's memory capacity.
However, a swap file may have slower read and write operations compared to zram, and it can be affected by the speed of your hard drive (I'm using a 10000 rpm disk).
Ultimately, the best option for you may depend on your specific use necessities and hardware configuration.
You may want to try both options and see which one provides better performance for your needs.
So... TRY