hey there. i just completed a grandmaster difficulty, solo ops typhon imperator entirely out of curiosity and courtesy of your post, and i didn't encounter anything like what you describe and i'm now genuinely confused if i did something else, granted the version i did had the cabal as the enemy and not the dread. i found this mission to be remarkably pleasant and frankly a very casual experience, so i'm not sure what's going on here. my build consisted of the armamentarium as my exotic armor, and striker titan with fist of havoc, blinding grenades, thunderclap, strafe lift and towering barricade. my aspects, knockout for melee bonuses and instant health on melee kills, and touch of thunder for the additional blinding effect on grenade bounce. my fragments, spark of brilliance for further blinding capability, spark of resistance for cqc, spark of shock for general field and crowd control and spark of ions as i couldn't find any better fragment for jolt in my build, and i wanted to lean slightly into the new bolt charges for some focusing strike/momentum transfer/bolstering detonation odds and ends. as for my guns, they consisted of izanagi's burden with anti-barrier sniper from the seasonal artifact, sublimation from edge of fate's kepler, with demolitionist and explosive payload and the mistral lift from the dawning event, with reconstruction and bait and switch. these aren't the best, and certainly are far from whatever may be meta now- i'm not sure, but these worked for me within my budget of new gear to clear the avant-garde and precision weapons loadout restriction for bonus points.