Лучший Embedded SQL DB для производительности записи?

var res =  [[{Timestamp: "2019-01-15T08:26:00.000Z", Average: 200},
{Timestamp: "2019-01-15T08:32:00.000Z", Average: 200},
{Timestamp: "2019-01-15T08:26:00.000", Average: 200},
{Timestamp: "2019-01-15T08:29:00.000Z", Average: 200},
{Timestamp: "2019-01-15T08:35:00.000Z", Average: 200}],
[{Timestamp: "2019-01-15T08:26:00.000Z", Average: 400},
{Timestamp: "2019-01-15T08:32:00.000Z", Average: 400},
{Timestamp: "2019-01-15T08:26:00.000Z", Average: 400},
{Timestamp: "2019-01-15T08:29:00.000Z", Average: 200},
{Timestamp: "2019-01-15T08:35:00.000Z", Average: 200}]];

/*    SECOND COMPILATION 
[[{Timestamp: 2019-01-15T08:26:00.000Z, Average: 200},
{Timestamp: 2019-01-15T08:32:00.000Z, Average: 200},
{Timestamp: 2019-01-15T08:26:00.000, Average: 200},
{Timestamp: 2019-01-15T08:29:00.000Z, Average: 200},
{Timestamp: 2019-01-15T08:35:00.000Z, Average: 200}],
[{Timestamp: 2019-01-15T08:26:00.000Z, Average: 400},
{Timestamp: 2019-01-15T08:32:00.000Z, Average: 200},
{Timestamp: 2019-01-15T08:26:00.000, Average: 200},
{Timestamp: 2019-01-15T08:29:00.000Z, Average: 200},
{Timestamp: 2019-01-15T08:35:00.000Z, Average: 200}]] */

let results = res.reduce((acc,resArray) => {
                innerResult = resArray.reduce((_acc,obj) => {
                   if(obj.Average == 200) {
                      _acc.up++;
                   } else {
                      _acc.down++;
                      _acc.time = obj.Timestamp;
                   }
                   return _acc;
                }, { up:0, down:0, time:null });
                
                if(innerResult.up > innerResult.down) {
                  acc.res.push('up');
                  acc.ts.push(null);
                }
                else {
                  acc.res.push('down');
                  acc.ts.push(innerResult.time);
                }
                return acc;
              }, {res:[], ts:[]});
console.log(results.res);
console.log(results.ts);