The Yak-3U is mid at everything and horrible at the most important aspects of a fighter
- Horrendous guns: it has the velocity of those japanese guns seen on late japanese props
- Overrated flight model: the turn rate is average and can be easily overrun by your average spit.
- very slow for a 5.7: most planes at 5.7 go 150 km/h faster than this thing, and even in a dive, the P-51 can outrun the Yak-3 and anything can catch up to it so running away is impossible
- very weak airframe: the Yak-3 catches fire almost every single time and falls apart when even hit by a single 20 mm, even being worse than that of the japanese fighters
In conclusion, it is a jack of all trades but even worse so just go for a late spitfire or a j2k dont play this rust bucket. If gaijin put this think at 5.0 or 4.7 mabye it can stand a chance