1080p over VGA is not advisable. It will be blurry most likely (you will see a difference if its right next to an HDMI output anyway). Your better bet would be to use a Display port splitter as you have previously posted to power all 3.
They really should do away with an analog output (VGA) on these laptops. Takes up valuable real-estate on a laptop. IMO anyway.
(ROG has simply become too expensive compared to the competition with same specs... 😞 )
MSI GE75 Raider 10SGS - i7 10750H - RTX 2080 Super - 32GB Ram - 1TB WD NVMe - 2TB 960 EVO - 300Hz 17inch Display
RETIRED: ALIENWARE R17 R5 - i7 8750H - GTX 1070 @ 1.9Ghz - 16GB DDR4 - NVMe 970 EVO 1TB - SSD 960 EVO 1TB
SOLD: ASUS G703VI-XH74K, RETIRED: ASUS G752VY-DH72, RETIRED: ASUS G750JH DB71 , RETIRED:ASUS G74Sx DH72