^ This. Also, in my experience, the Urth 67mm Variable ND2-400 Filter (Plus+) is a total lifesaver when you're on a budget. I've tried many over the years and this glass is surprisingly clean for the price. That weird stuttering is just your shutter speed being way too high in the sun. The ND lets you drop it to 1/60 for that natural motion blur. TL;DR: Grab a variable ND to fix the stutter and stay under budget.

Just found this thread. Like someone mentioned, variables are convenient, but I actually prefer fixed NDs for weddings. I remember one Austin shoot where my cheap variable filter gave me a nasty blue tint that was basically impossible to fix.

• Hoya 67mm ProND 64 Filter has zero color shift.
• Hoya 67mm ProND 8 Filter is better for late afternoon. Fixed ones are just safer for critical shots tho.

Can confirm

Man, the GH5 is such an absolute beast for video! I remember shooting a music festival in that Austin heat and without an ND filter, my footage looked like a jittery strobe mess because the shutter speed was hitting 1/4000 just to keep the exposure down. You gotta hit that 180-degree shutter rule for smooth motion, basically meaning your shutter should be double your frame rate. Forget the mist filters for now, just focus on exposure control first.

• K&F Concept 67mm Variable ND2-ND32 Nano-X is a fantastic budget pick. It gives you 1 to 5 stops of light reduction and I love that it has hard stops to prevent the dreaded X-pattern on your sensor.
• Tiffen 67mm Variable Neutral Density Filter is my go-to for weddings tho. It has a slightly warm cast that makes skin tones look incredible in the Texas sun. Grab the Tiffen if you can, its worth it for the reliability alone!