4 ms·

I got to 8 with a very similar tactic: 惃𣺻怌𢚻𤇂䂸𤀫䀌㼌䂹𢈫𤦀𤄫悸𤆔纹㴈聘𢚻𠆌𣚻𓋇𣾻𔗀𤊻ꈇ䂹𤅷𔒌膸𤅻羱繨𢘋傺𢪻𤆻𣺻𤄛𤆔㾺傺肻𤆻𤆡𤆤𤆐𤆑暌䂻𡘫𣯂𤃅𣿇𤅋𤆱𢙋傺𠆜𤢀𤆴𣺡𣫇𣢰𤾳