I think it’s still something you’ll have to try for yourself. Especially if you’re not accustomed to consuming that many carbs during a ride.
Unfortunately it is relatively expensive, but I’d definitely recommend trying it out prior to race day to ensure it agrees with you. Whether that’s a two hour trainer ride or something longer outdoors, give it a shot a few times and see what you think.
One general tip with the Beta Fuel (Maurten doesn’t seem to have this problem) is make sure you give it like 30 minutes to mix and dissolve before your race or else you just end up with clumps. Maybe the hard water I have in AZ is the issue so caveat there, but with the same hard water Maurten hasn’t given me issues. 17 oz of water for each.