NES Multi in 1 cart - Faulty/Picture issues

Hey!
I'm hoping someone here may have had this issue previously and found a fix for it?

I bought a 150-in-1 NES cart online so I can play some games until I can collect the originals (I've sourced a few already!).

I'm using a PAL front loader NES and I also have a PAL FL NES with lockout chip disabled (makes no diff on quality).

So issue: Put in game and I'm getting random coloured lines everywhere and artifacts constantly - I will attach pictures.
Another issue is that I think the sound/music is slower than it should be. Mario feels sluggish.

My old CRT is 50hz & 60hz and I've had it set on both PAL/SECAM/NTSC (2 diff).
The cartridge inside is perfectly clean and no (that I can see!) broke solder joints.
It's a famicom cart to a 72 pin adapter (inside).

It's all games on here that have this issue - I just tested mario. this cart vs original.

 

If it runs slower, then the games are NTSC versions, probably. Considering the NES's you have used are PAL, that might be the issue, and considering its not an official game, the copy protection might be missing from it, hence why it loads on your PAL systems. Whether that's causing the graphical glitches or not I don't know, but it's probably something you should consider either way.

 

Thanks.
I tried a few different things and a different TV with no luck.
The cart seems to have a CIC/lockout built in and if you reset 4-8 times it swaps to PAL or NTSC, made no difference.
I think it may be faulty.