Use random_access_indicator for key packet detection, rewrite packet lookup algorithm to use a chunked approach to perform better over the network

src/misc.ts

@@ -512,6 +512,10 @@ export const roundToMultiple = (value: number, multiple: number) => {
 	return Math.round(value / multiple) * multiple;
 };
 
+export const floorToMultiple = (value: number, multiple: number) => {
+	return Math.floor(value / multiple) * multiple;
+};
+
 export const ilog = (x: number) => {
 	let ret = 0;
 	while (x) {