[LG V30 Questions & Answers] ChazzMatt:
Not that I'm aware of. If you are talking about installing microG, etc.

OK, I will answer as long as you realize this is only MY opinion. I am only telling the reason for MY choice.

On every device except for this one (all phones/tablets since 2010 for me and my wife and even friends), I've alway run custom ROMs. I even wrote threads about custom ROMs available for certain devices, and what had recently been updated, who the devs were, etc. So, you know where I'm coming from.

However, on my V30, while I am rooted I have not installed AOSP/Lineage custom ROMs. I chose not to, because in the beginning the DAC didn't work with custom ROMs. Now it does. But LG camera doesn't work and neither does the DTS 3D Stereo libs. (The most common question in the custom ROM threads is how to get back LG stock camera; you can't.) Also it's my understanding (correct me if I'm wrong), but no V30 AOSP/Lineage custom ROMS have VoLTE. (doesn't' affect me personally as my AT&T Prepaid plan on my NON-AT&T branded phone doesn't qualify -- but for many people, they need VoLTE.)

Plus initially there were stability problems with early custom ROMs, where various people complained their phone was randomly rebooting several times a day. Again, that was in the past (early 2018), which I know is not the current state of custom ROMs. Still, in my current job, I need my phone working all the time for business communication, dealing with often urgent issues.

I found with rooted stock stable firmware, I had total control of my phone -- while having DAC, LG Camera, DTS 3D stereo. I could install mods like

Anxious V30 omnibus module

, and even Gravity Box and Xstana to add more functionality and even customize status bar icons. I also use Nova launcher with my own choice of icon pack, my own wallpaper.

I know the devs work VERY hard to make the custom ROMs as good as they can be, and I appreciate that. Many people come to the V30 for the easy rooting and because of the custom ROMs. But too many people root their V30 and IMMEDIATELY jump into custom ROMs without even updating their firmware back to most recent stock firmware first. (T-mobile H932 is the worst for that; you have to root that variant on Nougat and people then try to jump from that to Lineage Pie and it's a nightmare. Causes their fingerprint sensor not to work, etc.) This makes their custom ROMs buggy and they become disillusioned, when after rooting they should update to most recent stock firmware (necessary for good custom ROM foundation), and take a couple of days to read the various custom ROM threads to see what works, what doesn't.

Also, then when they do install a custom ROM (after making a TWRP backup) if something acts wonky, they will have a better idea if it's that ROM or the phone, since they have rooted stock firmware experience to compare. If it's that ROM, then go try another.

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Regrettably, you have one of the two V30 variants (H931/H933) which don't like AOSP/Lineage custom ROMs, at least after simply unlocking bootloader and rooting. Through much experimentation, users of those variants have found methods to "inoculate" their phones so they CAN run those custom ROMs.