In that temperature you need a slower reducer than 885. Your base is drying too quickly which leads to the issues you are having. You need the absolute slowest reducer you can get when spraying in hot temps like that. If you have any SPI 895, I would use that. PPG makes a very slow reducer DT898 which works much better than the PPG DT895. If you can find it Transtar (believe it or not) makes a very slow reducer that works very good in temps up to 100 degrees. 6751 I think. All that being said I would try to shoot the color as early in the morning as possible. 80 degrees or so would be much better than 95 especially for silver.
One more thing even when spraying in high temps it may seem like the base is drying very quickly but you should give it plenty of time to flash off, even a little more time than you normally would in 70-75 degree temps as the top of the coat is flashing off very quick but the solvents underneath are still there. So in reality the base drys slower in hotter temps than at 75 degrees. Give it a little extra time to flash between coats.
A little more air pressure and light-medium coats will make the metallic stand out better.