No rom is booting up properly topic

Hey guys,

I'm not new to installing roms, as I did with my SGS 2 before. But I haven't done it for a long time and it's the first time I do it on my SGS 5... with no success at all.
The problem is that, out of all the roms I've tried, none of them boot up entirely without crashes. I've followed the instructions to the letter and I'm not sure what I'm doing wrong.

Here's what I had before starting to fiddle:
SGS 5 G900F, no specific carrier, bought in Europe
stock android/touchwiz 5.0, never rooted or anything

Here are the roms I have tried:
cynaogen 5.1.1 12.1 20150508 for klte + these gapps http://teambliss.x10host.com/BlissStalk/Gapps/ --> stays blocked on the samsung logo forever
BlissPop 5.1.1 v3.3 20150515 for klte + pa_gapps-stock-5.1-20150418-signed or pa_gapps-modular-full-5.1-20150418-signed --> google newstand and another google app are crashing in a loop during the setup, I can't tap any button
PAC 5.1.1 20150503 for klte + pa_gapps-stock-5.1-20150418-signed or pa_gapps-modular-full-5.1-20150418-signed --> the install wizard application itself is crashing in a loop

THe kernels I've tried:
KT-SGS5-LP5.1-AOSP-G900-05.02.2015
boeffla-kernel-2.0-beta8-CM12.1-g900f.recovery

My recovery:
twrp-2.8.6.0-klte (flashed with Odin, it works fine, and I could boot the stock rom without problems with it)

Any idea about the cause of the problem?
Thanks