protobuf.js version: 6.5.3

Currently on mobile browsers, the performance lags significantly. Opening an issue to aid investigation

Here are live sites using this library. You can use these sites to profile. Heritage loads in 1.1s on MacBook pro while it takes several seconds to load on my Nexus 6

https://theheritage.tocktix.com
https://theaviary.tocktix.com
https://next.tocktix.com
https://alinea.tocktix.com