The deep equality check with _.isEqual() on potentially large profile data objects could be expensive. Consider comparing modification timestamps or checksums first before doing a full object comparison.

[ray-pH]

The deep equality check with _.isEqual() on potentially large profile data objects could be expensive. Consider comparing modification timestamps or checksums first before doing a full object comparison.

                const remoteModifiedAt = new Date(remoteProfileData.meta.modifiedAt ?? 0);
                const lastSyncTime = new Date(app.lastSyncTime ?? 0);
                const syncDecisionFromTime = this.getSyncDecision(localModifiedAt, remoteModifiedAt, lastSyncTime);
                let syncDecision: SyncDecision;
                if (app.meta.modifiedAt === remoteProfileData.meta.modifiedAt) {
                    // Only do deep equality check if timestamps are equal
                    syncDecision = (_.isEqual(remoteProfileData, app.exportProfile(false))) ? SyncDecision.none : syncDecisionFromTime;
                } else {
                    syncDecision = syncDecisionFromTime;
                }

Originally posted by @Copilot in #37 (comment)