Yeah, fortunately the first area with the lightning flashes is super short, so you shouldn't have to put up with it for long. I can't recall any other such headache inducing weather effects further on in the game (although I'm not particularly sensitive to this stuff). For me, POE started a little slow, but once I started getting used to the skill system and really began tweaking my char build, things started to get interesting. There are so many different combinations of skills gems with support gems with passives that make it the perfect game for theorycrafters.
For example, if you were to link a spell totem, incinerate, blind, and multiple projectiles gem you've now created a triple blinding flamethrower totem skill. There are many combinations that would just be terrible in practice, but nevertheless it's still fun experimenting. This depth to the character building process is probably the aspect of the game I like the most.