Any GUI Linux directory comparison tools that work?

I tried KDIFF3, it crashes partway through comparison. I understand that v1.10 has a bug and crashes when a directory has symlinks in it, as my home folder does.

I tried KDIFF3 v1.12 via the abomination called Flatpak, but it also crashes partway through scanning.

I tried MELD, it just hangs there "scanning" but uses no CPU and is doing nothing...

Ideas?

#Linux

@dancingtreefrog `xxdiff`. It's TK, ugly, but for me it works better than the other two.
@mdione Thanks. I tried it, not particularly easy to use on my 4K display. Turning on its recursive option makes it really slow!
@dancingtreefrog maybe it's not the recursiveness but the code size, or the diff size, or the screen size (I doubt TK is in any way optimized for modern displays or rendering library). TBH since git, it's been a long time I hadn't used it.

@mdione Well, TK has been improved for HIRez displays, I use a synthesizer app built on TK and it handles just fine.

Oh, well!